#include<iostream>

int main()
{
	//unsigned u = 10, u2 = 42;
	//std::cout << u2 - u << std::endl;
	//std::cout << u - u2 << std::endl;

	//int i = 10, i2 = 42;
	//std::cout << i2 - i << std::endl;
	//std::cout << i - i2 << std::endl;
	//std::cout << i - u << std::endl;
	//std::cout << u - i << std::endl;

	//std::cout << "\62\115\12" << std::endl;
	//std::cout << "\62\t\115\n" << std::endl;

	//int i, &ri = i;
	//i = 5, ri = 10;
	//std::cout << i << " " << ri << std::endl;

	return 0;
}